Hierro en piritas, minerales afines y residuos de su tostación. I. Definiciones y métodos de determinación.
IRON IN PYRITES, ANALOGOUS MINE ORES AND WASTES OF THEIR TOASTING. I. DEFINITION AND METHOD OF DETERMINATION.
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73.060.10 / Iron ores
CTN 22/SC 1 - Mineral raw materials
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